Just when people in the pearl industry think they have seen everything, they are witness to the introduction of a new pearl. The Edison pearl is the result of a new freshwater pearl culturing technique. When looking at the traditional freshwater pearls, you will notice that these are relatively small when cultured. The donor mollusk’s tissue is only about a 2 millimeter square of tissue. Per host mollusk, this means that we should realistically expect between 12 and 14 freshwater pearls.